Combination-lock



G. Wl FOLLICK.

COMBINATION LOCK.

APPLICATION FILED SEPT. 9. |920.l 1,3755944, Patented Apr. 19, 1921.

@Fin ffy t |I|IIII|IL||I|||I lllllllllllull lllll STATES GEORGE W. FOLLICK, 0F BUFFALO, NEWVYORK.

comBINn'rroN-Locx.

To all whom z't may concern:

Be it vknown that I, GEORGE a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Combination- Locks, of which the following is a speclicatlon.

- This invention relates to a .combination lock especially desirable for locking various parts of automobiles, such as the hooddoors, and a shut-off valve controlllng the fuel feedl to the carbureter,with a view to preventing theft of the car, but the lock is also applicable to safe-doors as well as other parts.

The 'object of the invention is the provision of a strong and practically burglarproof lock of this character which is at the same' time light, compact and inexpensive to manufacture.

In the accompanying drawings: Figure l is a horizontal section of the front portion of an automobile equipped with the lock. Fig. 2 is an enlarged face view of the lock and a fragment of the instrumentboard. Fig. 3 is a transverse section ofthe lock on line 3-3, Fi 2. Fig. 4 is a view of the inner end o one of the tumbler shafts, and the tumbler mounted thereon. Fig. 5 is a fragmentary sectional elevation thereof.- Fig 6 is a sectional side elevation of the main shaft or spindle. Fig. 7 is a cross section thereof on line 7--7, Fig. 6, associated with one of the notched tumblerdisks, which is shown in dotted lines. Fig. 3 is a view similar to Fig. 7, showing a different position of the tumbler-disk, which latter is shown in dotted lines.

Similar characters of reference indicate corresponding parts throughout the several views.

The stationary frame of the lock comprises a solid head or body 10 projecting from the face of the instrument-board v/11 and a casing 12 secured by screws 12a or other means to the back of said body. The.

latter preferably has a conical portion 13 seated in a corresponding opening of the instrument-board in which it is secured by screws 14.

yl'ournaled axially in the body 10 and the casing 12 is the main operatlng shaft or spindle 15 of the lock. l As shown in Fig. 3, this shaft is held against longitudinal displacement in one direction by a shoulder 16 abutting against a corresponding one in the W. Fomox,

' said specification of Letters Patent. Patented Apr. 19, 1921. Applicationl led September 9, 1920. SerialNm 409,077.

bore of the body 10,v and in the. opposite dlrection by a shaft-shoulder 17 abutting agalnst the front wall of the casing 12. At its front end the shaft has a knurled knob 18 for turning it, this knob being removably secured 1n place by a pin 19 or other approprla'te means. At its opposite end said operatlng shaft carries a crank, rock-arm or other suitable element 20 for transmitting 1ts oscillating or rotary motion to the part or parts to be locked. For example, in the drawlngs the arm 20 is connected by a link 21, bell crank 22 and link 23, with the actuatln cated 1n the fuel feed pipe 26 leading to the -carbureter 27,'so that upon turning the shaft in oneV or the other direction, said valve 1s opened or closed. To this shaft may also be coupled the locking bolts 28 or equivalent fastening4 devices of the hooddoors 29, so that oscillation of said shaft causes the bolts to be either projected or retracted to lock or unlock the doors. In the particular construction shown in the drawlngs, each bolt passes through a pair of lugs 30 carried by the hood-body and an lnterinediate lug 31 carriedv by the correspondlng door! and the bolt is connected. wlth the operating shaft 15 by a bell crank 32, link 33 and a universal joint 34, the

rigid stem 35 of the inner joint-member being secured obllquelg` in an'opening of said shaft, as shown in ig. 1.

The operating shaft is locked against ro-- clined to the axis of the main shaft 15, the' several tumbler-shafts converging toward responding recess 37 of the shaft by the rotation of the tumbler-shaft, `as shown in Fig. 7, the tumbler clears and unlocks themain shaft, leaving it free to be turned in shaft. The tumblers are rigidly either direction by its knob 18. When, however, the tumbler is turned to break regis.- ter between its notch and said recess, as shown in Fig. 8, the solid, unnotched margin of the tumbler interlocks with the recess, as shown in Fig. 8, and blocks rotation of the main shaft in either direction, this locking action being obviously due to the oblique arrangement ofthe tumbler and 'said recessrelative to the axis of the main shaft. The latter remains locked unless the notches of all the tumblers are brought opposite the corresponding shaft-recesses.

.Each tumbler-shaft is provided at its outer end with a knurled operating knob 10n removably pin-ned or otherwise attachedl thereto. The bases of these knobs are graduated and coperate with numbered dials 41 on the face ofthe fixed head 10, in a4 manner common to lcombination locks.

To permit changes of the combinatlon,

l vthe tumblers are capable of rotary adjustment on their shafts.

Preferably, this is accomplished by providing each tumbler with a square or other flat-sided bore and correspondingly shaping. the reduced inner end of its shaft, as shown, the tumbler being held in place by a screw 42 and washer 43, or other means. Upon removlng these screws and washers, the tumblers can be turned one or more quarters on their shafts ,to change the combination.

It will now be understood that ywhen the chauffeur desires to lock his car, he turns the several tumbler knobs 40l to the predetermined numbers on the dial 41 to .release the operating shaft 15, after which ,he turns the latter in the proper direction to close the shut-ofi' valve 25 and project the hood- 'locking bolts 28, and finally rotates the several tumbler-shafts to lock the operating shaft, as hereinbefore described. To unlockthe hood and open the shut-dif valve, the main shaft is released, as before, and then turned in the reverse direction.

4The tumblers, being housed within the tight casing 12, are invisible and inaccessible inthe assembled condition of the lock, and even if the knobs of the tumbler shafts Vwere broken off in an attempt to unlock the operating shaft, the lock could still not be opened because of the engagement of the tumbler disks with the recesses of the operating Shaft.

ring-notch in its edge,

land having a locking recess arranged obliquely to the axis of the shaft, an inclined rotary tumbler-disk arranged to engage edgewise 1n said recess to lock `said shaft agalnst rotation, said disk having a releasand means for turning sald tumbler-disk.

2. A combination lock, comprising a lockbody, an operatlng shaft journaled therein and having an inclined'locking recess, and a tumbler shaft arranged at an angle to sald operating shaft and carrying a notched, incllned tumbler-disk 'arranged to engage edgewise in said locking recess, said tumbler-dlsk being capable of rotary adjustment on its shaft.

3. A'combination lock, comprising a lockbody, an operatingshaft journaled'therein and having a plurality of inclined locking recesses in different sides thereof, rotary tumbler shafts converging toward said main shaft and each carrying an inclined tumbler-disk arranged to interlock with one of said shaft recesses, each tumbler-disk having a peripheral notch, and means for turning said operating and tumbler shafts.

. 4. A combination lock, comprising a frame including a solid head and a closed casing applied to the back of the head, an operatin shaft journaled invsaid head and said caslng and provided with shoulders abutting against said parts, respectively, the portion of said shaft within said casing having inclined locking recesses on dierent sides thereof, tumbler-shafts converging toward said operating shaft and each prolvided within said casing with an inclined tumbler-disk arranged to engage.`edgewise in one of said recesses and having a segmental notch jin its edge, and means for turning said operating and tumbler shafts.

GEORGE W4 FOLLICK. 

